LOLCS Chem Ch 4

Z represents what when writing atomic or isotope notation

isotopes have same ____ but different _____

if given: 34 protons; 50 neutrons; 34 electrons the isotope notation is

law of definite proportions states

weighted average of isotopes of an element determines its

The isotope ¹²⁵₅₂Te has how many neutrons

Thomson's cathode rays were composed of

calculate atomic mass of: boron-10 (10.013u) at 19.78% and boron-11 (11.009u) at 80.22%

who identified and named the proton

the gold foil experiment with alpha particles was done by

Thompson's plum pudding atomic model stated electrons were positively chardged pudding

who stated atoms of different elements have different masses; advancing study of chemistry

the lightest atomic particle is the

2 different isotopes of an element have same number of __ but different number of ___

what best describes an electron

what is the isotope notation for nickel with 28 protons and 34 neutrons

What is belief that matter is made of separate, discrete particles?

Dalton proposed the 1st atomic model based on experimental evidence

mass number is equal to sum of

what contributes to the atom's mass and charge

what is true of neutron

atomic number = number of neutrons

Bohr was the 1st to identify and name the proton